/**
 * @Author: jianglei
 * @Date:   2017-10-12 12:06:49
 */
"use strict";
import Vue from "vue";
export default function treeToArray(
    data,
    expandAll,
    parent = null,
    level = null
) {
    let tmp = [];
    Array.from(data).forEach(function(record) {
        if (record._expanded === undefined) {
            Vue.set(record, "_expanded", expandAll);
        }
        let _level = 1;
        if (level !== undefined && level !== null) {
            _level = level + 1;
        }
        Vue.set(record, "_level", _level);
        // 如果有父元素
        if (parent) {
            Vue.set(record, "parent", parent);
        }
        tmp.push(record);
        if (record.child && record.child.length > 0) {
            const child = treeToArray(record.child, expandAll, record, _level);
            tmp = tmp.concat(child);
        }
    });
    return tmp;
}
